Bran Castle, the inspiration for the castle of Count Dracula in Bram Stoker's horror novel "Dracula," is on the marketplace for an undisclosed amount.

The Daily Telegraph reported that the Romanian castle's current owners—Archduke Dominic Habsburg and his sisters Maria Magdalena and Elizabeth—are working with the New York law firm Herzfeld & Rubin to find the right buyer for the estate.

"If someone comes in with a reasonable offer, we will look at who they are, what they are proposing, and will seriously entertain the idea," said Mark Meyer with Herzfeld & Rubin.

Meyer and Archduke Dominic aren't naming any prices, but Huffington Post reported that Bran Castle has previously been on the market for $135 million. The Telegraph also reported that the Archduke offered the castle to the Romanian government for $80 million.

This is an undated file photo of Bela Lugosi as Count Dracula in the 1931 film 'Dracula.'The Associated Press

The castle of Count Dracula, the fictional fearsome vampire imagined by Stoker, was based on Bran Castle, much as the character Dracula was based on Bran's one-time resident, Vlad "The Impaler" Tepes.

In his book, Stoker describes Dracula's castle as being "on the very edge of a terrific precipice ... with occasionally a deep rift where there is a chasm [with] silver threads where the rivers wind in deep gorges through the forests." This description, along with an etching of Dracula's castle in a first edition of the book, are strikingly similar to the real location, according to the website for Bran Castle.

Vlad the Impaler, ruler of Wallachia, may not have ever captured Bran Castle, but it is known that he spent two months as a prisoner there in 1462 after being captured by a Hungarian army.

The Habsburg royal family, including 10-year-old Dominic, was forced out of the castle in 1948 when the communist regime took over Romania, according to the Telegraph. 58 years later, Bran Castle was returned to the Hapsburgs, who have been maintaining it since.

The family, who are now in their 70s, are concerned that they don't have the time or energy to modernize the 57-room castle, which reportedly has plumbing issues and no bathrooms.

"Archduke Dominic and his family care very much for the castle, and it's in far better shape now than it was when run by the government," Meyer told the Telegraph. "The aim, though, is to take the whole thing a stage further, re-route the road and make Bran a destination, the kind of place people will stay for two or three days."

Bran Castle reportedly sees 560,000 visitors a year.

"We'd like whoever buys the castle to continue running it as a tourist destination. This isn't just a national monument, it's the largest and most significant attraction in Romania," Meyer added.